Prevention of enamel demineralization after tooth bleaching by bioactive glass incorporated into toothpaste
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Gjorgievska, E. and Nicholson, J. W. (2011) Prevention of enamel demineralization after tooth bleaching by bioactive glass incorporated into toothpaste. Australian Dental Journal, 56 (2). pp. 193-200. ISSN 1834-7819 (Online) (doi:10.1111/j.1834-7819.2011.01323.x)
Full text not available from this repository.Abstract
Background: The aim of this study was to determine the effects of bleaching on the structure of the enamel layer of teeth and the potential of the commercial bioactive glass NovaMin® in two different toothpastes to remineralize such regions of the enamel. Three aspects were considered: the extent and nature of the alterations in the enamel after application of the bleaching agents; the extent of remineralization after application of two commercial toothpastes containing bioactive glass; and whether or not there were differences between the toothpastes in terms of their effectiveness in promoting remineralization.
Methods: Bleaching agent based on 16% carbamide peroxide was applied to the enamel surface of freshly extracted human molars for 8 minutes, once a day for 7 days. After the bleaching cycles, the enamel surface was analysed by SEM and EDX.
Results: The results obtained in the study lead to the conclusion that application of 16% carbamide peroxide causes distinct morphological changes to the enamel surface which vary from mild to severe. Subsequent treatment with either of the toothpastes containing the bioactive glass NovaMin® resulted in the formation of a protective layer on the enamel surface, consisting of bioactive glass deposits, with only slight differences between the two brands. Application of these dentifrices also caused increases in the Ca and P content of the enamel layer, returning it to that of undamaged enamel.
Conclusions: Remineralizing toothpastes should be used after bleaching, in order to repair any damage to the mineral tissue caused by these procedures.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | bioactive glass, bleaching, demineralization, enamel, remineralization |
| Subjects: | Q Science > QD Chemistry R Medicine > R Medicine (General) R Medicine > RK Dentistry |
| Faculty / School / Research Centre / Research Group: | Faculty of Engineering & Science > School of Science (SCI) |
| Related URLs: | |
| Last Modified: | 07 Dec 2016 11:45 |
| URI: | http://gala.gre.ac.uk/id/eprint/7206 |
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